Preparation method of middle distillate type hydrocracking catalyst

A hydrocracking and catalyst technology, applied in physical/chemical process catalysts, molecular sieve catalysts, chemical instruments and methods, etc., can solve the problem of low selectivity of middle distillate oil

Active Publication Date: 2016-11-23
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Beta molecular sieves are not hydrothermally treated or hydrothermally treated at relatively low temperatures, the molar ratio of silica to alumina is less than 30:1 and at least 28 wt% SF 6 Adsorption capacity, the β molecular sieve obtained by modification is used as a catalyst prepared by cracking components, and the selectivity of middle distillates is not high

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0051] (1) Preparation of amorphous silicon-aluminum precursor

[0052] Prepare solid aluminum sulfate to 100mL concentration to be 80g A1 2 o 3 / L aluminum sulfate working solution (a). Dilute the concentrated ammonia water with an appropriate amount of distilled water to obtain about 10wt% dilute ammonia water (b). Take SiO 2 Mass meter 28wt% sodium silicate solution, then diluted to 80mL concentration is 150g SiO 2 / L sodium silicate working solution (c). Take a 5-liter steel reaction tank, add 0.2 liter of distilled water into the reaction tank, stir and heat to 70°C, open the valves of the containers (a), (b) and (c) at the same time, control (a) and The flow rate of (c) is to keep the neutralization reaction time within 40 minutes, and the flow rate of (b) is adjusted quickly to keep the pH value of the system at 7-8, and the temperature of the system is controlled at about 60°C. After the aluminum sulfate reaction is completed, stop adding (b), and the amount of (c...

Embodiment 2

[0060] (1) Preparation of amorphous silicon-aluminum precursor

[0061] Prepare solid aluminum chloride to make 100mL concentration be 100g A1 2 o 3 / L aluminum chloride working solution (a). Dilute the concentrated ammonia water with an appropriate amount of distilled water to obtain about 10wt% dilute ammonia water (b). Take SiO 2 Mass meter 28wt% sodium silicate solution, then diluted to 100mL concentration is 100g SiO 2 / L sodium silicate working solution (c). Take a 2-liter steel reaction tank, add 0.3 liter of distilled water into the reaction tank, stir and heat to 70°C, open the valves of the containers (a), (b) and (c) at the same time, control (a) and The flow rate of (c) is to keep the neutralization reaction time within 40 minutes, and the flow rate of (b) is adjusted quickly to keep the pH value of the system at 7-8, and the temperature of the system is controlled at about 60°C. After the aluminum chloride reaction is completed, stop adding (b), and the amo...

Embodiment 3

[0069] (1) Preparation of amorphous silicon-aluminum precursor.

[0070] The solid aluminum chloride is prepared into 120mL concentration and is 100g A1 2 o 3 / L aluminum chloride working solution (a). Dilute the concentrated ammonia water with an appropriate amount of distilled water to obtain about 10wt% dilute ammonia water (b). Take SiO 2 Mass meter 28wt% sodium silicate solution, then diluted to 100mL concentration is 80g SiO 2 / L sodium silicate working solution (c). Take a 2-liter steel reaction tank, add 0.3 liters of distilled water to the reaction tank, open the valve of the container containing (a), add (a) into the reaction tank and stir, and then open the container of (c) Valve, add 40ml of (c) into the reaction tank in about 30 minutes, after heating to 70°C, open the valve of the container containing (b), control the flow of (b) so that the neutralization reaction time is 40 minutes, when the system When the pH value reaches about 7~8, close the valve, an...

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Abstract

The invention discloses a preparation method of a middle distillate type hydrocracking catalyst. The preparation method comprises preparation of a carrier and loading of a hydrogenation active metal component, wherein a preparation method of the carrier comprises the following steps: mixing a beta molecular sieve, a Y molecular sieve, amorphous silica-alumina and an adhesion agent, shaping an obtained mixture I, and preparing the carrier by drying and roasting the shaped mixture I; a preparation method of the beta molecular sieve comprises the following steps: preparing an amorphous silica-alumina precursor by adopting a specific acid-alkaline precipitation method, then adding water, a silicon source and a template agent into the amorphous silica-alumina precursor to obtain silica-alumina gel, and carrying out two-step dynamic crystallization, exchanging with an ammonium salt and processing with a template stripping agent to obtain the beta molecular sieve. The beta molecular sieve prepared by the method provided by the invention has the characteristics of high degree of crystallinity, high silica-alumina ratio and high stability; the hydrocracking catalyst prepared by the method has the advantages of high activity, high middle distillate selectivity and high product quality.

Description

technical field [0001] The invention relates to a preparation method of a hydrocracking catalyst, in particular to a hydrocracking catalyst for producing high-quality middle distillate oil by using beta molecular sieve and Y molecular sieve as main cracking components. Background technique [0002] In view of the current shortage of petroleum resources, increasingly stringent environmental protection requirements, and the structure of petroleum products that do not meet market demand, the application of hydrocracking technology will become an effective technical measure to improve the quality of petroleum products, reduce environmental pollution, and increase market adaptability. It has become the most important process device in a modern refinery. At the same time, the increasingly stringent emission standards for motor fuels have made the problem of directly producing high-quality clean fuels from processing low-quality heavy oils increasingly prominent, and the developmen...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J29/80C10G47/20
Inventor 孙晓艳樊宏飞王继锋于政敏
Owner CHINA PETROLEUM & CHEM CORP
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